import {ResultEnum} from "@/config/enums/httpEnum.ts";
import axios, {AxiosError, AxiosInstance, AxiosRequestConfig, AxiosResponse} from "axios";
import {CustomAxiosRequestConfig, ResultData} from "@/interface";
import {ElMessage} from "element-plus";
import {checkStatus} from "@/helper/checkStatus.ts";
import {showFullScreenLoading, tryHideFullScreenLoading} from "@/config/serviceLoading.ts";
import router from "@/routers";
import {authStore} from "@/stores/modules/auth.ts";
import {LOGIN_URL} from "@/config";

const config = {
    // 默认地址请求地址，可在 .env.** 文件中修改
    baseURL: import.meta.env.VITE_API_URL as string,
    // 设置超时时间
    timeout: ResultEnum.TIMEOUT as number,
    // 跨域时候允许携带凭证
    withCredentials: true
};

const authState = authStore();

class RequestHttp {
    service: AxiosInstance;
    public constructor(config: AxiosRequestConfig) {
        // instantiation
        this.service = axios.create(config);

        /**
         * @description 请求拦截器
         * 客户端发送请求 -> [请求拦截器] -> 服务器
         * token校验(JWT) : 接受服务器返回的 token,存储到 vuex/pinia/本地储存当中
         */
        this.service.interceptors.request.use(
            (config: CustomAxiosRequestConfig) => {
                const authState = authStore();
                // 当前请求不需要显示 loading，在 api 服务中通过指定的第三个参数: { noLoading: true } 来控制
                config.noLoading || showFullScreenLoading();
                if (config.headers && typeof config.headers.set === "function") {
                    config.headers.set("Authorization", "Bearer " + authState.token?.access_token);
                }
                return config;
            },
            (error: AxiosError) => {
                return Promise.reject(error);
            }
        );

        /**
         * @description 响应拦截器
         *  服务器换返回信息 -> [拦截统一处理] -> 客户端JS获取到信息
         */
        this.service.interceptors.response.use(
            (response: AxiosResponse) => {
                const { data } = response;
                // const token = tokenStore();
                tryHideFullScreenLoading();
                // 全局错误信息拦截（防止下载文件的时候返回数据流，没有 code 直接报错）
                if (data.code && data.code !== ResultEnum.SUCCESS) {
                    ElMessage.error(data.msg);
                    return Promise.reject(data);
                }
                // 成功请求（在页面上除非特殊情况，否则不用处理失败逻辑）
                return data;
            },
            async (error: AxiosError) => {
                const { response } = error;
                tryHideFullScreenLoading();
                // 请求超时 && 网络错误单独判断，没有 response
                if (error.message.indexOf("timeout") !== -1) ElMessage.error("请求超时！请您稍后重试");
                if (error.message.indexOf("Network Error") !== -1) ElMessage.error("网络错误！请您稍后重试");
                const data = response?.data as any;
                // 登陆失效
                if (data.code == ResultEnum.OVERDUE || data.code == ResultEnum.UNAUTHED) {
                    authState.resetAuth();
                    router.replace(LOGIN_URL);
                    ElMessage.error(data.msg);
                    return Promise.reject(data);
                }
                // 服务端返回错误消息，则直接显示
                if (data.msg) {
                    ElMessage.error(data.msg);
                } else if (response) {
                    // 否则根据服务器返回的响应状态码，做不同的处理
                    await checkStatus(response.status);
                }
                // 服务器结果都没有返回(可能服务器错误可能客户端断网)，断网处理:可以跳转到断网页面
                if (!window.navigator.onLine) await router.replace("/500");
                return Promise.reject(error);
            }
        );
    }

    /**
     * @description 常用请求方法封装
     */
    get<T>(url: string, params?: object, _object = {}): Promise<ResultData<T>> {
        return this.service.get(url, { params, ..._object });
    }
    post<T>(url: string, params?: object | string, _object = {}): Promise<ResultData<T>> {
        return this.service.post(url, params, _object);
    }
    put<T>(url: string, params?: object, _object = {}): Promise<ResultData<T>> {
        return this.service.put(url, params, _object);
    }
    delete<T>(url: string, params?: any, _object = {}): Promise<ResultData<T>> {
        return this.service.delete(url, { params, ..._object });
    }
    download(url: string, params?: object, _object = {}): Promise<BlobPart> {
        return this.service.post(url, params, { ..._object, responseType: "blob" });
    }
}

export default new RequestHttp(config);
